Debian DSA-070-1 : netkit-telnet - remote exploit

#%NASL_MIN_LEVEL 70300

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-070. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(14907);
  script_version("1.22");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2001-0554");
  script_bugtraq_id(3064);
  script_xref(name:"DSA", value:"070");

  script_name(english:"Debian DSA-070-1 : netkit-telnet - remote exploit");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The netkit-telnet daemon contained in the telnetd package version
 0.16-4potato1, which is shipped with the 'stable' (2.2, potato)
 distribution of Debian GNU/Linux, is vulnerable to an exploitable
 overflow in its output handling.

The original bug was found by <[email protected]>, and announced to
bugtraq on Jul 18 2001. At that time, netkit-telnet versions after
0.14 were not believed to be vulnerable.

On Aug 10 2001, zen-parse posted an advisory based on the same
problem, for all netkit-telnet versions below 0.17.

More details can be found on
http://online.securityfocus.com/archive/1/203000. As Debian uses the
`telnetd' user to run in.telnetd, this is not a remote root compromise
on Debian systems; however, the user `telnetd' can be compromised.

We strongly advise you update your telnetd package to the versions
listed below."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://online.securityfocus.com/archive/1/203000"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2001/dsa-070"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected netkit-telnet package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:netkit-telnet");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2001/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_set_attribute(attribute:"vuln_publication_date", value:"2001/07/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"2.2", prefix:"telnet", reference:"0.16-4potato.2")) flag++;
if (deb_check(release:"2.2", prefix:"telnetd", reference:"0.16-4potato.2")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");